Abstract
Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints. Here a conventional cultivar (Janz) is compared with a novel experimental line (Vigour 18), bred for high leaf vigour, to explore the hypothesis that a vigorous wheat grows better in unploughed soil. Roots of both genotypes in unploughed soil were three times more distorted with 30% shorter apices and 60% shorter expansion zones than roots in ploughed soil, because of voids between blocky peds and packed sand particles that impeded root apices. More than half the root length contacted dead, remnant roots. Vigour 18 roots grew 39% faster, were thicker and distorted less than Janz roots in unploughed soil, but developed similarly in ploughed soil. Vigour 18 shoots grew 64% faster in unploughed soil, but 15% faster in ploughed soil. Fumigation of unploughed soil improved the growth of Janz only. We suggest that faster root growth, different exudates promoting a more beneficial rhizosphere microflora, or modified shoot responses are possible mechanisms to explain Vigour 18's superior growth. Vigorous genotypes may present a new opportunity for increased productivity with conservation farming.
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Claims 11
Claim · model-written summary
Roots in unploughed soil were three times more distorted than roots in ploughed soil.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- unploughed soile1
- Outcome
- distortede1
- Direction
- three times moree1
- Value
- three timese1
- Comparator
- ploughed soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e1“Roots of both genotypes in unploughed soil were three times more distorted with 30% shorter apices and 60% shorter expansion zones than roots in ploughed soil”
Claim · model-written summary
Root apices in unploughed soil were 30% shorter than in ploughed soil.
- Taxon
- wheatTriticum aestivume0
- Treatment
- unploughed soile1
- Outcome
- apicese1
- Direction
- shortere1
- Value
- 30%e1
- Comparator
- ploughed soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e1“Roots of both genotypes in unploughed soil were three times more distorted with 30% shorter apices and 60% shorter expansion zones than roots in ploughed soil”
Claim · model-written summary
Root expansion zones in unploughed soil were 60% shorter than in ploughed soil.
- Taxon
- wheatTriticum aestivume0
- Treatment
- unploughed soile1
- Outcome
- expansion zonese1
- Direction
- shortere1
- Value
- 60%e1
- Comparator
- ploughed soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e1“Roots of both genotypes in unploughed soil were three times more distorted with 30% shorter apices and 60% shorter expansion zones than roots in ploughed soil”
Claim · model-written summary
More than half of the root length contacted dead, remnant roots.
- Taxon
- wheatTriticum aestivume0
- Outcome
- root lengthe2
- Value
- More than halfe2
- Qualifier
- contacted dead, remnant rootse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e2“More than half the root length contacted dead, remnant roots”
Claim · model-written summary
Vigour 18 roots grew 39% faster than Janz roots in unploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e3
- Treatment
- unploughed soile3
- Outcome
- roots grewe3
- Direction
- fastere3
- Value
- 39%e3
- Comparator
- Janze3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e3“Vigour 18 roots grew 39% faster, were thicker and distorted less than Janz roots in unploughed soil, but developed similarly in ploughed soil”
Claim · model-written summary
Vigour 18 roots were thicker than Janz roots in unploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e3
- Treatment
- unploughed soile3
- Outcome
- rootse3
- Direction
- thickere3
- Comparator
- Janze3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e3“Vigour 18 roots grew 39% faster, were thicker and distorted less than Janz roots in unploughed soil, but developed similarly in ploughed soil”
Claim · model-written summary
Vigour 18 roots were distorted less than Janz roots in unploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e3
- Treatment
- unploughed soile3
- Outcome
- distortede3
- Direction
- lesse3
- Comparator
- Janze3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e3“Vigour 18 roots grew 39% faster, were thicker and distorted less than Janz roots in unploughed soil, but developed similarly in ploughed soil”
Claim · model-written summary
Vigour 18 roots developed similarly to Janz roots in ploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e3
- Treatment
- ploughed soile3
- Outcome
- developede3
- Direction
- no_changeinferrede3
- Comparator
- Janze3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e3“Vigour 18 roots grew 39% faster, were thicker and distorted less than Janz roots in unploughed soil, but developed similarly in ploughed soil”
Claim · model-written summary
Vigour 18 shoots grew 64% faster in unploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e4
- Treatment
- unploughed soile4
- Outcome
- shoots grewe4
- Direction
- fastere4
- Value
- 64%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e4“Vigour 18 shoots grew 64% faster in unploughed soil, but 15% faster in ploughed soil”
Claim · model-written summary
Vigour 18 shoots grew 15% faster in ploughed soil.
- Taxon
- wheatTriticum aestivume0
- Material
- Vigour 18e4
- Treatment
- ploughed soile4
- Outcome
- shoots grewe4
- Direction
- fastere4
- Value
- 15%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e4“Vigour 18 shoots grew 64% faster in unploughed soil, but 15% faster in ploughed soil”
Claim · model-written summary
Fumigation of unploughed soil improved the growth of Janz.
- Taxon
- wheatTriticum aestivume0
- Material
- Janze5
- Treatment
- Fumigation of unploughed soile5
- Outcome
- growthe5
- Direction
- improvede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional wheat (Triticum aestivum L.) cultivars grow slowly in unploughed soil because of physical and biological constraints”
e5“Fumigation of unploughed soil improved the growth of Janz only”
The same questions in other papers
solarization · growth · Triticum aestivum (wheat)Positive and negative results
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See all 24 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.